Samsung's Galaxy Note is outperforming expectations. The company announced it …

Samsung announced today the Galaxy Note, their 5.3-inch smartphone released in October, has surpassed the 5-million-units mark in its first five months. The rapidly selling device has led Samsung Electronics to gain about two-thirds of the South Korean mobile phone market share, making the company Korea's leading mobile phone provider.

When the Note was first announced, the device struck Ars as odd enough to be labeled "strange." But clearly the demand exists for the Note and its 1.4GHz dual-core processor, 16 or 32GB of internal storage, rear 8-megapixel camera, and front 2-megapixel camera (compatible with either HSPA+ or LTE). Samsung's official blog touts the device's the device's S Pen, the company's "revolutionary" stylus tool that "accurately recreates the analogue experience of using a real pen."

In addition to sharing its sales figures, Samsung announced an upgrade for the Note. Called the "Premium Suite" upgrade, the company states the new software includes extra multimedia features, a range of new S Pen optimized applications, and an OS upgrade to Android 4.0 Ice Cream Sandwich.